Update release workflow to be able to sign artifact consistently

Author: pacphi

.github/workflows/release.yml

@@ -23,6 +23,8 @@ jobs:
         with:
           distribution: liberica
           java-version: 17
+          gpg-private-key: ${{ secrets.MAVEN_GPG_PRIVATE_KEY }}
+          gpg-passphrase: MAVEN_GPG_PASSPHRASE
 
       - name: Set version in POM
         run: ./mvnw versions:set -DnewVersion=${{ github.event.release.tag_name }}
@@ -34,6 +36,7 @@ jobs:
         run: ./mvnw deploy -Pgithub
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          MAVEN_GPG_PASSPHRASE: ${{ secrets.MAVEN_GPG_PASSPHRASE }}
 
       - name: Set up Apache Maven Central
         uses: actions/setup-java@v4